Check the listing for details. Stubby Boring Bar, Carbide Tip: Min. Bore: 3/8", Max Depth: 11/16", Shank 5/8". Condition: New. Listed at 42.50 USD. Stubby Boring Bar, Minimum Bore Diameter= 3/8", Maximum Bore Depth= 11/16", Shank Diameter= 1/2", Overall Length= 2-5/16", Carbide Tipped, Made in the USA by APT